FORCEINLINE void BlendCurves(const TArray<const FBlendedCurve*>& SourceCurves, const TArray<float>& SourceWeights, FBlendedCurve& OutCurve)
{
if(SourceCurves.Num() > 0)
{
OutCurve.Override(*SourceCurves[0], SourceWeights[0]);
for(int32 CurveIndex=1; CurveIndex<SourceCurves.Num(); ++CurveIndex)
{
OutCurve.Accumulate(*SourceCurves[CurveIndex], SourceWeights[CurveIndex]);
}
}
}
FORCEINLINE void BlendCurves(const TArray<const FBlendedCurve*>& SourceCurves, const TArray<float>& SourceWeights, FBlendedCurve& OutCurve, ECurveBlendOption::Type BlendOption)
{
if(SourceCurves.Num() > 0)
{
if (BlendOption == ECurveBlendOption::Type::BlendByWeight)
{
BlendCurves(SourceCurves, SourceWeights, OutCurve);
}
else if (BlendOption == ECurveBlendOption::Type::NormalizeByWeight)
{
float SumOfWeight = 0.f;
for (const auto& Weight : SourceWeights)
{
SumOfWeight += Weight;
}
if (SumOfWeight > ZERO_ANIMWEIGHT_THRESH)
{
TArray<float> NormalizeSourceWeights;
NormalizeSourceWeights.AddUninitialized(SourceWeights.Num());
for(int32 Idx=0; Idx<SourceWeights.Num(); ++Idx)
{
NormalizeSourceWeights[Idx] = SourceWeights[Idx] / SumOfWeight;
}
BlendCurves(SourceCurves, NormalizeSourceWeights, OutCurve);
}
else
{
BlendCurves(SourceCurves, SourceWeights, OutCurve);
}
}
else
{
OutCurve.Override(*SourceCurves[0], SourceWeights[0]);
for(int32 CurveIndex=1; CurveIndex<SourceCurves.Num(); ++CurveIndex)
{
OutCurve.Combine(*SourceCurves[CurveIndex]);
}
}
}
}